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\ PATENT OFFICEt sEBEUse.MA'r-1\IE,-OF Bestron, MAssAenU'sETrs.

VENTILATOR FOR WINDOWS.

Specification forming part of VLetters Patent No. 100,429, dated March 1, 1870.

To all whom it may concern:

Be it known that I, SEBEUS C. MAINE, ot' Boston, in the county of Suolk and Gommonwealth of Massachusetts, have invented a new and Improved Mode of Ventilating Rooms and I do herebydeclare that the following is a full and exact description thereof, reference beingv had to the accompanying drawings,and to theletters of reference marked thereon. y

The nature of myinvention consists in placing two pieces or more of boards together, byhinges, slides, or in any like manner, so as to admit of their being extended, folded, or contracted, so as to fill the space or distance between the sidesof any window. Through these boards I cut holes, one or more, of any desired size, and in them I place tubes or pipes, made in elbow form, or quarter circles, so that the lines across the ends are at right angles with each other. t In one end of each tube I place a damper, bytwhich I can regulate the ow of air into or out of a room.

I also, ou one side of one end of the tube, depress or sink the line ot the side, so as to form a cup, or the cup may be attached to theoutside of the tube; or a small pan may be substituted for the cup, and placed within the tube and removed at pleasure.

To enable others skilled in the art to makeand use my invention, I will proceed to de'- scribe the same in its construction and operation.

In the accompanying drawings, Figure 1 is a view, in perspective, of the entire apparatus. Y

A and a, are two pieces of board. B and b are clasps, between which the boards are held', so as to allow them to slide. C and c are the tubes through which the air passes. D is a cup attached to the side of one of the ends-of the tube, and E is a damper in the tube.

In constructing my ventilator, I take two pieces of boards, A c, in the` drawings, about two feet long, eight inches wide, and halt' inch Near one end of each piece I outa In these with eachother.

the edges of the boards, I hold them together, at the same time allowing them to slide upon each other. In this manner they may be extended or drawn out to the width of any ordinary window. In the tubes I put damp'efrs E, to regulate the current of air passing in or out of the room. I have also in the sides of the tubes a cup, D.

1f the air of the room is offensive from morbitic matter or other causes, I turn one or both tubes so that the line of the side of the tube Y will be parallel with the window-stool. This places my cup in position to hold liquids. I now place in it some good disinfectant, and Iopen the damper E, so as to 'admit a dow of air into the room, passing over the surface of and in contact with the liquid disinfectant in -cup D. A spongemay be placed in the cup to hasten evaporation and to prevent spilling. By this simple processv the room is supplied with fresh air charged with disinfectants, chemically changing the foul air of the room. Should it be desired, deodorizers may be used in the same manner, thus distributing any desired perfume through the room. l

It will be readily seen thatlthis method of introducing air into a room is freevfrom the serious objection raised against almost every other-to wit, drafts or currents of air.

In this apparatus the tubes may be set at anyfangle directing the air from the inmates of the room. 'It' turned upward, the airis thrown upon the ceiling, and will continue upon its surface all over the room, gradually i settling from its own gravity. It' turned downward, it will come in contact with the loor, and spread out upon'its surface, pervading'all parts of the room, rising as it becomes heated by the air ot' the room.

Should air be required lin greater quantities than can be admitted through the tubes, the tubes may be dispensed with, and the sliding boards doubled, forming, a sliding box with two or three sides, that can be placed in a window, so as to admit a ow of air upward or downward the entire width of the window; but this I leave for future patents.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

'1. The extension-boards A c, constructed and operated substantially as described, and In testimony whereof I have signed my name for the purpose set forth. l tothisspeeitioationiu:thepresenoeoft-wo:sub-

2. The tubes C c, with oupsto l-reo'eve'disiuseri-hing witnesses.

feetants, and constructed substantially as set forth. S. G. MAINE.

3. The dampers, oups, pans, aud tubes, or

their equivalents, 'in lcombinationwith the exit-nesses.:

tension-boards, all constructed and operatingl J. L. NEWTON,

relatively to each other substantially as and WILLIAM EASON.

for the purpose set forth. 

